List of top Physics Questions on Units and measurement asked in AMUEEE

The nearest star to our solar system is $ 4.3 $ light years away. The distance of this star in Parsec is (Mean distance between the earth and the sun $ = 1.5 \times 10^{11}\, m $ and one light year $ = 9.46 \times 10^{15} \, m $ )

Read the following statements $S _{1}:$ An object shall weigh more at pole than at equator when weighed by using a physical balance. $S _{2}$ : It shall weigh the same at pole and equator when weighed by using a physical balance. $S _{3}$ : It shall weigh the same at pole and equator when weighed by using a spring balance. $S _{4}$ : It shall weigh more at the pole than at equator when weighed using a spring balance. Which of the above statements is/are correct?